. The Street railway journal . cylinders operating clamps,which can be quickly set to clamp the truck frame at a numberof points while it is being riveted. The advantage of thepneumatic clamp is, of course, the rapidity of operation, as itwould require many times as long to tighten up the screwclamps as it does to set the pneumatic clamps. Two sets ofclamps or assemblers are used in riveting together a truckframe. Figs. 22 and 25 are views of truck frames and parts invarious stages of construction. The extensive scale on whichthis company has gone into truck manufacture and the numberof specia
. The Street railway journal . cylinders operating clamps,which can be quickly set to clamp the truck frame at a numberof points while it is being riveted. The advantage of thepneumatic clamp is, of course, the rapidity of operation, as itwould require many times as long to tighten up the screwclamps as it does to set the pneumatic clamps. Two sets ofclamps or assemblers are used in riveting together a truckframe. Figs. 22 and 25 are views of truck frames and parts invarious stages of construction. The extensive scale on whichthis company has gone into truck manufacture and the numberof special templets and machines required to do this workcheaply might seem at first to call for rather large investment;but it was considered that if this special apparatus for makingvarious parts was not built this year it would have to be builtlater to supply and repair parts, and that it would be amplyjustified now, not only on account of the reduction that it wouldeffect in the first cost of trucks, but because of its use in later. Renold and the Morse silent chains have been used with satis-faction. In the main it has been found most satisfactory to teach newmen how to perform certain operations and keep them steadilyat that work, than to hire general machinists, who know a littleof everything and not much of any one thing. HEATING SYSTEM In a vault underneath the store room is a large bank ofsteam coils supplied from the power house across the air is forced from these steam coils to the various partsof the shop by motor-driven fans. The hot-air ducts are all intunnels under the concrete floor, indicated in the plan, Fig. 2,as it was desirable to leave the room overhead clear of hot-air pipes, because of light and the presence of the travelersystem in all parts of the shop. The hot-air tunnels come tosurface near pillars, and galvanized iron piping alongside ofthe pillars carry hot-air up a short dis-tance and discharge it downward at anangle of about 45 degs. TOILET RO
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
